Improved washer-cutter



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Lette-rs Patent No. 94,870, dated September 14, 1869.'

IMPROVED WAS'HEIR-fl'J'TTYIEIR.;4

The Schedule referred, to in these Letters Patent and making part of the same.

To all whom it may concern .i

Be it linown that I, WILLIAM A. 'GL anic, oiWoodbridge,` in the county of New Haven, and State of Connecticut, h'ave invented a new and useful Improve ment in Adjust-able Plug-.and Washer-0utters, of which the following is a full, clear, and exact description, reference heilig hadto the accompanying drawing, andjin whichi Figure 1 represents a side View or elevation of an adjustable plug and washer-cutter, constructedin accordance with my improvemei-lt;

11 igure 2, asectional. elevatiolrof the same; and

`Figure 3,' a front view-or elevation thereof.A Similar letters of reference indicate corresponding parts.

in which a spring or yielding centre is used in connection with a radial arm, having an adjustable' cut-ter'or cutters, and attached to the stock which carries the r centre, so that on applying suitable pressure andf`r0 tating the stook,'the cutter' or cutters make4 the nec-v essary incision in or through the material out of which the plug or washer is to be made; and The invention consists in certain novelties in the construction of said device or combination ot' parts, including a'n annular cuttingedged adjustable or springing centre, whereby the actionv ofthe tool is much improved, and many conveniences or advantages secured.

Referringto the accompanying drawing- A represents the stock of the -toolfsuitahly shaped at its upper or back end to admit of its being worked or rotated by a brace or other proper means, and whicliiis of a socket-construction at its opposite end, toreceive within it the centre C and spring S. l' This centre C isl of peculiar construction, being made to present an annular cutting-edge, a., at its outer cud, whereby, on being y pressedl down ou or against the woul,j1eat.her, or -othermateri'al out of which it is required to cut a plug or washer, the same makes a circularl cut or imlentationl iu the surface of the material, that most eti'ectually servesto guide 0r ccntre the tool during theaction of the cutter or cutters This is important, as with a at or conicalcentre the cutters, as they are rotatedV and borne down into the' material by pressure on and rotation of the stock A, are very liable, as, forfinstance, in working onv wood,

My invention relates to a plug and washer-cutter,y

to follow at points in their rotation the libre, dragging or pressing the centre to one side, and so destroying theiruth of the cut by the deviation of the cutters from their circular travel, which makes irregular work. i. v

Such irregularity is rendered impossible by the guiding or restraining action which is secured to the centre through its annular cutting-edge a, within the surface of the material. i j

In the socketed connection of said centre C with -the stock A, it is preferred to restrict the centre from indepelulently turning, and to lock the same with the stock, so that it may have play up and down therein,

.subject to the action ofthe spring S, to allow of the cutters project-ing into and through the material, and, on removing pressure from the stock, of their clearing themselves from the cut.

This is done by cutting a vertical guiding-slot, e, through the centre C, and passing a locking-pin, d, through it and the stock.

The cutter or cutters It R, of which there may be one or more, accordingly as it is desired to cut plugs or washers, may be variously attached to their carrying radial arm B, so as to admitl of their adjustment nearer to or' further from the centre C, to suit diereilt diameters of cut, but a 'most convenient and substantial attachment of the cutters and construction of said radial arm may be secured by forming such arm of a main branch, mf, which is made a'xture to the stock aud'clamping-plat n, adjustable by screws fr '/r, and boththe branch am .plate formed with dovetailshaped inner edges; to hold the cutters R R in between them, and on slackcning the screws fr a', to admit of said cuttersV being slid or adjusted in direction ofthe leugthof the arrn,as required.

What is hereclairned, and desired to be secured by Letters Patent, is-- The combination, with the annular spring-borne centre C and its stock A ofthe cutter-arm B, constructed as described, of a main branch, m, and clamp `ing-platen, formed with dovetailed inner edges, to hold the adjustable cutters R It in between them, as

shown and described.

` WM. A. CLARK.

Witnesses :4

, FRED. Harmes,

HENRY PALMER.v 

